<template>
  <div>
    <h3>角色列表管理</h3>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图-->
    <el-card>
      <!--添加角色按钮区域-->
      <el-row>
        <el-button type="primary" @click="addNameVisble=true">添加角色</el-button>
      </el-row>
      <!--角色列表区域-->
      <el-table :data="roleList" border stripe>
        <!--展开列-->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbuttom', i1===0?'bdtop':'','icenter']" v-for="(item1,i1) in scope.row.children"
              :key="item1.id">
              <!--渲染一级权限-->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)"> {{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>

              </el-col>
              <!--渲染二级权限-->
              <el-col :span="19">
                <el-row :class="[i2===0 ? '':'bdtop','icenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" closable @close="removeRightById(scope.row,item3.id)"
                      v-for="(item3,i3) in item2.children" :key="item3.id">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!--索引列-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit" @click='showEditDialog(scope.row.id)'>编辑
            </el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete" @click='removeNameById(scope.row.id)'>删除
            </el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog title="添加角色" :visible.sync="addNameVisble" width="50%" @close="addDialogClosed">
      <!--内容主体区域-->
      <!--角色名称-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <!--角色描述-->
        <el-form-item label="描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addNameVisble = false">取 消</el-button>
        <el-button type="primary" @click="addName">确 定</el-button>
      </span>
    </el-dialog>


    <!--修改角色对话框-->
    <el-dialog title="修改" :visible.sync="editNameVisible" width="50%" @close="editNameClosed">
      <!--角色名称-->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <!--角色描述-->
        <el-form-item label="描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editNameVisible = false">取 消</el-button>
        <el-button type="primary" @click="editNameInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!--分配权限对话框-->
    <el-dialog title="分配权限" :visible.sync="setRighDialogVisible" width="50%" @close="setRightDialogClosed">
      <!--属性控件-->
      <el-tree :data="rightList" :props="treeProps" show-checkbox node-key="id" default-expand-all
        :default-checked-keys="defkeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRighDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        // 所有角色列表数据
        roleList: [],
        // 控制添加角色对话框的显示与隐藏
        addNameVisble: false,
        // 控制修改角色对话框的显示于隐藏
        editNameVisible: false,
        // 添加用户的表单数据
        addForm: {
          roleName: '',
          roleDesc: '',
        },

        // 添加表单的验证规则对象
        addFormRules: {
          roleName: [{
              required: true,
              message: '请输入角色名',
              trigger: 'blur'
            },
            {
              min: 1,
              max: 10,
              message: '长度在 1 到 10 个字符',
              trigger: 'blur'
            }
          ],
          roleDesc: [{
              required: true,
              message: '请输入角色描述',
              trigger: 'blur'
            },
            {
              min: 1,
              max: 10,
              message: '长度在 1 到 10 个字符',
              trigger: 'blur'
            }
          ],
        },
        // 查询到角色信息对象
        editForm: {},
        // 修改表单的验证规则对象
        editFormRules: {
          roleName: [{
              required: true,
              message: '请输入角色名',
              trigger: 'blur'
            },
            {
              min: 1,
              max: 10,
              message: '长度在 1 到 10 个字符',
              trigger: 'blur'
            }
          ],
          roleDesc: [{
              required: true,
              message: '请输入角色描述',
              trigger: 'blur'
            },
            {
              min: 2,
              max: 10,
              message: '长度在 2 到 10 个字符',
              trigger: 'blur'
            }
          ],
        },
        // 控制权限对话框的显示与隐藏
        setRighDialogVisible: false,
        // 权限数据
        rightList: {},
        // 树形控件的属性绑定对象
        treeProps: {
          label: 'authName',
          children: 'children'
        },
        // 默认选中的节点Id值数组
        defkeys: [],
        // 当前即将分配权限的角色id
        roleId: ''
      }
    },
    created() {
      this.getRolesList()
    },
    methods: {
      // 获取所有角色的列表
      async getRolesList() {
        const {
          data: res
        } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('角色列表获取失败')
        }
        this.roleList = res.data
        // console.log(this.roleList)
      },
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击按钮 ,添加新用户
      addName() {
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return
          // 可以发起添加用户的网络请求
          const {
            data: res
          } = await this.$http.post('roles', this.addForm)
          if (res.meta.status != 201) return this.$message.error('添加用户失败')
          this.$message.success('添加用户成功')
          this.addNameVisble = false
          // 更新角色列表
          this.getRolesList()
        })
      },
      // 展示角色用户对话框
      async showEditDialog(id) {
        const {
          data: res
        } = await this.$http.get('roles/' + id)
        if (res.meta.status != 200) return this.$message.error('查询用户信息失败')
        this.editForm = res.data
        console.log(this.editForm)
        this.editNameVisible = true;
      },
      // // // 监听修改角色对话框的关闭事件
      editNameClosed() {
        this.$refs.editFormRef.resetFields()
      },
      editNameInfo() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          // 发起修改信息的数据请求
          const {
            data: res
          } = await this.$http.put('roles/' + this.editForm.roleId, {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc

          })
          if (res.meta.status != 200) {
            return this.$message.error('更新用户信息失败')
          }
          // 关闭对话框
          this.editNameVisible = false
          // 刷新数据列表
          this.getRolesList()
          // 提示修改成功
          this.$message.success('更新用户信息成功!')
        })
      },
      // 根据id删除对应的用户信息
      async removeNameById(id) {
        // 弹框询问用户是否删除数据
        const confirmResult = await this.$confirm('此操作将永远删除该用户,是否继续？', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

        // 如果用户确认删除,则返回值为字符串 confirm
        // 如果用户取消了删除，则返回值为字符串cancel
        // console.log(confirmResult)

        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const {
          data: res
        } = await this.$http.delete('roles/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getRolesList()

      },
      //根据id提示是否删除 
      async removeRightById(role, rightId) {
        //弹窗提示用户是否删除 
        const confirmResult = await this.$confirm('此操作将永远删除该用户,是否继续？', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') {
          return this.$message.info('取消了删除')
        }
        //  发送请求 删除对应的权限
        const {
          data: res
        } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)

        if (res.meta.status !== 200) {
          return this.$message.error('删除权限失败')
        }
        role.children = res.data
      },
      // 展示分配权限的对话框
      async showSetRightDialog(role) {
        this.roleId = role.id
        // 获取所有权限的数据
        const {
          data: res
        } = await this.$http.get('rights/tree')
        if (res.meta.status !== 200) {
          return this.$message.error('获取分配权限失败')
        }
        this.rightList = res.data
        // console.log(this.rightList)
        // 递归获取三级节点的Id
        this.getleafKeys(role, this.defkeys)

        this.setRighDialogVisible = true
      },
      // 通过递归的形式，获取角色下所有三级权限的id，并保存到defkeys数组中
      getleafKeys(node, arr) {
        // 如果当前node节点不包含childre 属性 ，则是三级节点
        if (!node.children) {
          return arr.push(node.id)
        }
        // 如果不是三级节点，那就使用递归进一步获取三级节点
        node.children.forEach(item =>
          this.getleafKeys(item, arr))
      },
      // 监听分配权限对话框的关闭事件
      setRightDialogClosed() {
        this.defkeys = [];
      },
      // 点击分配角色分配权限
      async allotRights() {
        const keys = [
          // 获取全选
          ...this.$refs.treeRef.getCheckedKeys(),
          // 获取半选
          ...this.$refs.treeRef.getHalfCheckedKeys()
        ]
        // 以逗号的形式字符串拼接
        const idStr = keys.join(',')
        const {
          data: res
        } = await this.$http.post(`roles/${this.roleId}/rights`, {
          rids: idStr
        })
        if (res.meta.status !== 200) {
          this.$message.error('分配权限失败')
        }
        this.$message.success('分配权限成功!')
        // 刷新数据列表
        this.getRolesList()
        // 把分配权限对话框关闭
        this.setRighDialogVisible = false
      }
    },

  }

</script>
<style lang="less" scoped>
  .el-tag {
    margin: 7px;
  }

  .bdtop {
    border-top: 1px solid #eee;
  }

  .bdbuttom {
    border-bottom: 1px solid #eee;
  }

  .icenter {
    display: flex;
    align-items: center;
  }

</style>
